Horsager, Christina http://orcid.org/0000-0002-6304-361X
Færk, Emil
Gearhardt, Ashley N.
Østergaard, Søren Dinesen
Lauritsen, Marlene Briciet
Funding for this research was provided by:
Fonden til Lægevidenskabens Fremme (17-L-0013)
Beckett-Fonden (17-0-0822)
Heinrich Kopps Grant
Det Frie Forskningsråd (7016-00048)
Novo Nordisk Fonden (NNF20SA0062874)
Lundbeckfonden (R358-2020-2341, R344-2020-1073)
Article History
Received: 10 August 2020
Accepted: 13 January 2021
First Online: 7 February 2021
Compliance with ethical standards
:
: The authors declare no conflicts of interest.
: The included adolescents were invited via their parents (legal guardians) to ensure, that the parents were informed on the purpose of the study. This procedure ensured, that the parents were able to decide whether their child should have the opportunity to participate in the survey, and that it was the parents who provided informed consent. The parents (and the adolescents) were informed that participation in the survey was voluntary and that the consent to participate could be withdrawn at any time. The study was therefore performed in accordance with the principles of the Declaration of Helsinki. The questionnaire and survey methodology were approved by the Danish Health Data Authority, and approval of the use of data from the Danish registers was granted by Statistics Denmark and the Danish Health Data Authority. In Denmark, ethical review board approval is not required for survey and register-based studies if they do not include collection of biological material. Data obtained from the survey and data from the Danish registers were de-identified by Statistics Denmark before being made available to the authors of this study. The project was registered with the Danish Data Protection Agency (record number 2008-58-0028).
: The adolescents were invited via their parents (legal guardians) to ensure, that the parents were informed on the purpose of the study. This procedure ensured that the parents were able to decide whether their child should have the opportunity to participate in the survey. Furthermore, the invitees were informed, that survey participation was voluntary and that their consent to participate could be withdrawn at any time.